<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <link rel="stylesheet" href="popup.css">
    <script type="module" src="popup.js"></script>
</head>
<body>
    <strong>Hello World!</strong>
    <div style="background-color:red; width:100px; height:30px; color: white;margin-top:20px;">点击测试</div>
</body>
</html>
